#!/usr/bin/perl 
use strict;
use warnings;
use feature 'say';

print "The lower the score the more stable the structure.", "\n",
      "Please set a limiting value e.g. -3: ", "\n";

chomp( my $value = <STDIN> );
chomp( my @input = <DATA> );
my @trash;
my @treasure;

for ( @input ){
    if ( /^>+/ ) {
        say "$_ matches '/^>+/'";
        push @treasure, $_;
    } elsif ( /^None/ ) {
        say "$_ matches '/^None/'";
        push @trash, $_;
    } elsif( /(^[\d\.-]{4})/ ) {
        say "$_ matches '/(^[\d\.-]{4})/'";
        if ( $1 <= $value ) {
            say "$1 is <= $value";
            push @treasure, $_;
        } else {
            say "$1 is > $value";
            push @trash, $_;
        }
    } else {
        say "$_ doesn't match anything!";
        push @trash, $_;
    }
}

say 'Treasure:';

foreach my $stuff ( @treasure ) {
    say $stuff;
}

__END__
hsa_circ_0067224|chr3:128345575-128345675-|NM_002950|RPN1 FORWARD
-4.4.. 6 .. 17 xxxxxxxxxxGTGAC CAGT ATGC ACTG AAGATGAGGTTTGTG
-0.9.. 5 .. 18 xxxxxxxxxxxGTGA CCAGT ATGC ACTGA AGATGAGGTTTGTGG
None.. 1 .. 20 xxxxxxxxxxxxxxx GTGACCAGTATGCACTGAAG ATGAGGTTTGTGGAC